Answer:
1.) At high altitude it takes longer to cook spaghetti.
Explanation:
The first even describes depression in boiling point due to reduction in external pressure . It is not a colligative property.
Depression of freezing point and elevation of boiling point due to impurity or addition of solute are colligative priperty.
A) The answer to whether an average-size, single-family home be built with one day’s output from the saw mill is; No, it can't be built from one days output
B) The number of days will it take for the saw mill to produce enough lumber to build a neighborhood of 100 average-size homes is; 1100 days
A) From research, the average size capacity saw mill usually produces around 1500 board feet of boards per day.
Now, converting board ft to cubic meter gives;
1 board feet = 1/424 m³
Thus; 1500 board feet = 1500 * 1/424 ≈ 3.54 m³
Now, we are told that it takes 38 m³ of boards and plywood to build an average size single family home.
Since one days output = 3.54 m³
It is less than the volume required for the average sized house and so the daily output will not be sufficient.
B) Number of days to produce enough boards and plywood for the average sized family home = 38/3.54 ≈ 11 days
Thus, for 100 homes;
Number of days = 100 * 11 = 1100 days
Read more about production capacity at; brainly.com/question/25899399
Answer:
None of the above
Explanation:
Erikson's was a student of freud's and expanded of his theory of psychosexual development by emphasizing the importance of culture in parenting practices and motivations and adding three stages of adult development.
Below is the list of enthalpies of formation of the compounds involved in the chemical reaction.
HCl: -92.3 kJ/mol
H2: 0
Cl2: 0
Both H2 and Cl2 do not have enthaply of formation because they are pure substances.
Since, in the reaction there are 2 moles of HCl,
Enthalphy of formation = enthalpy of products - enthalphy of reactant/s
= 0 - (-92.3)(2) = +184.6 kJ
Hence, the answer is the first choice.
Answer:
[ NaOH ] = 0.026 M
Explanation:
- molarity NaOH = mol NaOH / Vsln(L)
∴ Vsln = 20.46 mL = 0.02046 L
- NaOH(aq) + KHC8H4O4(aq) → KNaC8H4O4(aq) + H2O(l)
∴ Mw KH(KHC8H4O4) = 204.24 g/mol
⇒ mol KHP = 0.1082 g / 204.24 g/mol = 5.298 E-4 mol
⇒ mol NaOH = (5.298 E-4 mol KHP)( mol NaOH/mol KHP)
⇒ mol NaOH = 5.298 E-4 mol
⇒ [ NaOH ] = 5.298 E-4 mol / 0.02046 L
⇒ [ NaOH ] = 0.026 mol/L = 0.026 M
